#!/bin/bash
#
# Git maintenance script, run by cron.

# Update symlinks to user git repo locations.
find /afs/hcoop.net/user -mindepth 3 -maxdepth 3 -noleaf -exec \
     sh -c "test -e {}/.hcoop-git && { \
         rm -f /var/cache/git/\$(basename {}); \
         ln -sf {}/.hcoop-git /var/cache/git/\$(basename {}); }" \; \
     > /dev/null 2>&1

# Remove symlinks for users that have wrong permissions
IFS=$'\n'
for user in $(ls -1 /var/cache/git); do
    if ! test -e $(readlink /var/cache/git/$user); then
        rm -f /var/cache/git/$user
        continue
    fi
    gitpath=$(readlink /var/cache/git/$user)
    find -L $gitpath -noleaf -type d \
        -regex '.*/\(refs\|objects\|hooks\)\(/.*\|$\)' -prune -o -exec \
        sh -c "! { fs la {} | \
                   egrep '^ +system:anyuser .*r' > /dev/null; } && \
               rm -f /var/cache/git/$user 2>/dev/null" \; #\
        > /dev/null 2>&1
done

# Update cache of front page.
cache=/var/local/lib/gitweb/indexcache.html
wget -q --timeout 30 -O $cache.tmp 'http://git.hcoop.net/?nocache=y'
if test -s $cache.tmp; then
    chmod a+r $cache.tmp
    mv $cache.tmp $cache
else
    rm -f $cache.tmp
fi